LR 5.3 not only hasn't sped things up here, but it actually seems much slower. I opened a dng, added a few basic tone adjustments and then a single brush adjustment to the eyes. Each time I made a brushstroke, or changed a setting, it took the LR several seconds to recover. Once or twice I thought it had frozen, but eventually it came back. What is happening here? I thought by now LR5 would have licked this performance problem, but it seems to be permanent. Does anyone have any kind of suggestions? It really makes working past the limited basic controls very frustrating.
I'm on a Mac Pro 2.93 Quad-Core Xeon with 8 GB of ram. running Mountain Lion 10.8.5, Nvidia Geforce GT 120 with 512 MB.